SONOMA, CALIFORNIA

Monthly Total Growing Degree Days

(048351)

Base Temperature = 50 F

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1952 0.00 z 14.50 m 99.64 c 181.61 b 292.36 b 319.44 c 556.89 c 523.26 b 526.50 339.00 62.50 24.50 2925.71
1953 66.00 42.00 56.50 127.00 190.50 352.50 547.00 478.50 546.00 264.00 103.50 30.00 2803.50
1954 23.00 41.00 36.00 216.50 316.00 410.00 550.50 435.00 405.50 249.50 78.00 18.00 2779.00
1955 5.50 25.00 73.50 52.50 343.00 395.00 503.00 509.00 481.00 307.00 122.00 69.23 a 2885.73
1956 25.50 21.00 63.50 162.50 316.00 473.00 570.00 525.00 484.50 259.00 114.50 22.00 3036.50
1957 4.00 105.50 98.50 223.00 322.50 558.00 586.00 531.50 507.50 281.00 59.50 14.50 3291.50
1958 9.50 114.00 35.50 200.00 372.00 494.00 613.50 707.00 604.50 402.40 e 148.50 53.50 3754.40
1959 49.00 29.50 j 181.50 284.50 329.00 515.50 665.50 600.88 a 491.54 d 437.50 101.38 a 16.50 3672.80
1960 28.50 j 51.02 b 152.42 a 188.00 302.00 614.00 627.00 566.00 470.00 318.50 73.50 30.50 3392.94
1961 24.00 77.00 71.50 218.50 224.00 574.04 d 671.50 643.00 473.00 344.50 95.00 16.50 3432.54
1962 36.00 41.50 50.00 253.00 270.00 490.00 560.00 599.50 466.00 338.50 138.50 50.50 3293.50
1963 11.00 180.50 60.00 99.00 316.50 458.50 530.00 585.00 596.00 348.50 83.00 0.50 3268.50
1964 5.00 49.00 96.50 169.00 241.00 429.00 577.50 582.00 476.38 a 399.00 76.00 89.50 3189.88
1965 9.50 36.50 89.00 200.50 316.00 383.50 545.50 592.00 399.00 421.50 137.00 0.50 3130.50
1966 29.00 17.50 142.50 296.50 348.00 490.50 509.50 611.00 514.00 374.00 131.00 27.50 3491.00
1967 36.50 20.50 63.50 10.00 330.00 422.50 627.50 664.50 585.50 398.00 184.00 35.50 3378.00
1968 12.50 151.50 135.00 228.00 306.50 527.00 623.00 585.00 556.50 315.00 107.50 10.00 3557.50
1969 22.00 19.00 121.00 139.00 406.00 451.50 614.50 653.50 538.50 306.00 104.00 72.50 3447.50
1970 85.50 76.00 173.50 103.00 426.00 476.50 617.00 539.00 530.00 271.00 138.00 26.00 3461.50
1971 27.00 33.50 95.00 110.50 258.50 437.50 592.00 637.00 535.50 277.50 53.50 2.00 3059.50
1972 3.50 74.50 211.00 201.50 400.00 566.50 699.00 656.50 499.50 376.00 67.00 29.00 3784.00
1973 21.50 86.50 76.00 315.54 b 469.50 641.50 670.00 595.00 583.50 399.50 114.00 30.00 4002.54
1974 71.00 30.07 a 141.50 212.00 353.00 573.50 664.00 676.00 617.50 445.50 102.00 9.50 3895.57
1975 12.50 43.00 110.00 88.50 447.50 528.00 599.50 645.00 610.50 350.00 102.50 46.00 3583.00
1976 30.00 58.50 115.00 163.50 397.50 529.00 658.50 567.50 552.50 440.00 184.50 26.50 3723.00
1977 6.00 f 105.50 95.50 312.50 248.50 597.00 662.50 694.00 530.50 437.00 193.50 100.00 3976.50
1978 82.27 e 96.00 258.50 174.00 506.50 530.50 674.77 a 662.00 620.00 490.12 b 98.00 7.50 4200.16
1979 16.50 45.50 146.50 234.00 449.50 e 587.59 a 697.50 b 615.00 674.00 0.00 z 103.00 39.27 a 3608.35
1980 52.70 a 173.00 150.50 217.00 311.07 b 42.00 z 658.00 622.00 539.48 a 421.50 173.00 31.00 3349.25
1981 51.50 108.00 104.00 249.50 377.00 750.50 609.50 618.00 555.50 341.00 234.64 b 50.00 4049.14
1982 1.00 112.50 80.50 181.50 365.00 416.00 584.00 611.50 553.00 377.00 41.50 25.00 3348.50
1983 27.50 81.50 118.50 131.00 346.00 523.00 628.00 694.00 694.50 486.50 141.50 85.50 3957.50
1984 53.00 45.00 235.00 184.50 0.00 z 517.00 738.00 659.50 697.50 359.00 76.50 14.00 3579.00
1985 0.50 126.50 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 540.00 429.50 343.50 92.00 16.00 1548.00
1986 66.00 144.00 238.50 203.50 370.50 521.00 604.50 578.50 397.50 413.00 207.50 15.00 3759.50
1987 16.00 86.00 130.00 316.00 461.00 543.00 535.00 623.50 549.00 473.50 113.00 57.00 3903.00
1988 25.50 118.50 198.00 249.00 336.00 514.50 724.50 633.50 514.00 415.00 138.50 40.00 3907.00
1989 9.50 39.50 145.50 317.50 353.50 526.50 625.00 594.00 482.50 341.00 143.00 13.50 3591.00
1990 23.00 35.00 141.50 330.00 358.50 537.50 673.50 676.00 577.50 435.00 132.50 5.00 3925.00
1991 46.00 146.00 56.50 165.50 303.50 421.50 631.00 574.00 568.50 482.00 166.55 a 16.50 3577.55
1992 1.55 a 114.50 149.50 317.50 506.50 501.00 654.50 666.00 556.50 449.00 159.00 19.50 4095.05
1993 7.50 19.00 206.00 216.50 404.50 586.00 639.00 640.15 a 525.50 428.50 106.50 22.00 3801.15
1994 8.50 32.00 201.50 236.50 366.00 534.50 558.00 635.50 538.50 366.00 32.00 2.00 3511.00
1995 69.50 134.50 113.00 209.50 319.50 497.50 678.50 649.50 549.50 429.50 235.00 96.50 3982.00
1996 37.50 139.00 168.50 257.00 397.00 558.62 a 705.50 697.00 508.50 396.50 145.00 77.50 4087.62
1997 49.00 78.00 208.00 295.00 522.50 578.50 680.50 639.50 620.00 403.50 183.50 26.00 4284.00
1998 55.00 34.50 148.00 180.50 219.00 461.00 650.50 702.00 561.50 348.00 82.00 10.50 3452.50
1999 20.15 a 30.00 41.50 231.00 295.50 477.50 597.50 612.50 544.50 424.00 168.62 a 36.88 b 3479.65
2000 44.43 a 80.50 171.50 258.50 409.00 591.50 574.00 630.00 575.50 354.50 82.50 b 14.47 a 3786.40
2001 1.55 a 38.50 199.00 160.00 570.50 613.00 634.50 647.50 526.03 a 456.00 168.62 a 29.45 a 4044.66
2002 19.63 a 87.50 111.00 226.00 336.00 546.00 666.00 616.50 558.00 374.50 179.50 31.50 3752.13
2003 92.00 50.50 158.00 85.50 362.50 534.00 695.50 628.00 607.50 480.50 69.50 41.85 a 3805.35
2004 27.38 a 39.50 305.00 269.50 392.00 548.00 638.50 665.00 607.00 345.00 106.50 36.88 b 3980.26
2005 3.50 83.50 166.00 160.00 342.00 439.00 694.50 619.00 438.00 367.00 187.00 60.45 a 3559.95
2006 24.50 72.50 21.50 171.00 392.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 681.50
Period of Record Statistics
MEAN 29.84 73.42 129.91 203.39 356.88 510.81 624.36 613.91 539.82 379.25 122.98 32.81 3610.62
S.D. 24.14 43.71 62.17 71.47 77.99 77.44 56.56 57.31 66.47 63.01 47.87 24.94 373.06
SKEW 0.85 0.65 0.48 -0.32 0.43 0.08 -0.21 -0.82 0.04 -0.19 0.38 1.09 -0.41
MAX 92.00 180.50 305.00 330.00 570.50 750.50 738.00 707.00 697.50 490.12 235.00 100.00 4284.00
MIN 0.50 17.50 21.50 10.00 190.50 319.44 503.00 435.00 397.50 249.50 32.00 0.50 2779.00
NO YRS 52 53 54 54 53 52 53 54 54 53 54 54 46